Bar-straightening machine



J l 1924. G. A. WISE BAR STRAIGHTENING MACHINE 3 Sheets-Sheet 1 INVENTUR George A. Wise 5, mu aww his Hm-nay Filed Aug.

July 8, 1924.

G. A. WISE BAR STRAIGHTENING MACHINE Filed Aug. 12, 1922 3 Sheets-Sheet 3 INVE N TOR rIlLl July 8, 1924.

G. A. WISE BAR STRAiGHTENING MACHINE Filed Aug. 12 1922 3 Sheets'Sheet INVENTUR fieorfe A. WZ S' b, iqvw his afla r174;

Patented July 8, 1924.

UNITED STATES GEORGE A. WISE, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T SUTTON-ABRAM- SEN ENGINEERING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BAR-STRAIGHTENING MACHINE.

Application filed August 12, 1922. Serial No. 581,497.

T 0 all whom it may concern:

Be it known that I, GEORGE A. WISE, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in a Bar-Straightening Machine, of which the following is a specification.

This invention relates to a gag press, or machine for the straightening of metallic bars by means of a pressing action.

The object of the invention is to provide a machine of this nature which embodies adjusting means for adapting the machine to bars of various form in cross section, and also means to adjust for bars of different length and for bars the distortion of which occurs in curvatures of differentlength and degree.

A further object of the invention is toprovide a double acting gag press in which the above mentioned adjustments may be made independently on both ends of the machine, so that the press may act simultane-, ously to straighten two bars of different cross sectional form and degree of distortion.

In the accompanying drawings Figure 1 is a plan view of the machine; Fig. 2 is a side elevation thereof; Fig. 3 is an end elevation of the machine; and Fig. 4 is a fragmentary plan view illustrating one of the adjustments of which the machine is capable.

The machine comprises upright end memhere 1 and a table or platform 2 supported thereby. Beneath table or platform 2 are bearings 3 in which is mounted the main operating shaft 1 of the machine, extending transversely thereof. The operating shaft i may receive power either from some external source by means of a pulley 5 on the shaft; or may receive power from the electric motor 6, on the shaft of which is a pinion 7 meshing with a gear 8 on the operating shaft.

The operating or pressure heads 9 and 10 of the machine are secured to cross heads 11; which travel in guides 12, and which are pivoted at 13 to a walking beam or double acting pitman 14. This pitman 14: has an eccentric connection with a cross shaft 15 mounted in bearings 16. The cross shaft-15 is operated by means ofa gear'l'f Q thereon which meshes with a' pinion 18 on the operating shaft 4. i

In straightening a bar, the bar rests and bufferheads 19 that the chief-novelty of the present invention resides.

As will be seen particularly by'reference to Figs. 2 and 3 of the drawings, the trans verse blocks 20 are slidable in the table or platform 2 by means of lon'gitudinal'tongues 21 engaging in corresponding grooves 22in the table or platform. Rigidly secured to each of the transverse blocks 20 are apair of adjusting screws 23 which have a screw threaded engagement with end sills24con the table 2. On the oute'r extremities of these adjusting screws 23 are pinions 25 which mesh with gears 26 rotatably 'supported by pins 27 secured in the end frame members 1. The gears 26 may, be rotated by means of handle members or manually operable levers 28. 5

It is thus possible to move the blocks 20. in either direction longitudinally of the table or platform 2. i

Thebufi'erheads 19 themselvesare positioned by means of blocks 29; -which have a' clove tailed engagement with the transverse base blocks 20, and each of which isconnected with one of the buflerheads 19 by means of a tenon 30. Through the blocks 29 of each set passes a screw 31 by means of which these small blocks may be adjusted along the base blocks 20. These adjusting screws 31 are turned. by means of crank ted lines in their mutually closest position.

It will be seen that the adjustment ofthe base blocks 20 longitudinally of the machine accommodates for bars of different width; so that i a relatively narrow bar may be.

, provides for two independent adjustments at each end of a double acting straightening machine.

As the machine as illustrated and described is susceptible of a number of modifications Without departing from the spirit of the invention which it embodies, the scope of the invention is to be restricted only by the limitations contained in the appended claims.

WVhat I claim is:

1. In a machine for straightening metallic bars the combination of pressure heads ar-- ranged to act upon bars at both ends of the machine, unitary means for actuating all the pressure heads of the machine, a backing block at each end of the machine and ad-v justable longitudinally thereof, and a pair of buffer heads for supporting bars being acted upon mounted in each backing block and adjustable toward and away from each other therein independently of the longitudinal adjustment of the backing block in which they are mounted. a

2. In a machine for strai htening metallic bars means for acting upon liars at both ends of the machine to straighten the same, a pair of bar supporting members or buffer heads at each end of the machine, an adjusting ranged to act upon bars at both ends of the.

machine, unitary means for actuating all the pressure heads of the machine, a pair of bar supporting members or buffer heads at each end of the machine, and an adjusting screw so arranged with relation to each pair of buffer heads that rotation of the screw in one direction acts to separate its associated buffer heads and rotation thereof in the opposite direction causes said butler heads to approach each other. a

a. In a machine for straightening metallic bars the combination of pressure heads arranged to act upon bars at both ends of the machine, unitary means for actuating all the pressure heads of the machine, an adjusting screw so arranged with relation to each pair of buffer heads that rotation of the screw in one direction acts to separate its associated butler heads and rotation thereof in the opposite direction causes said buffer heads to hand.

GEoRe-E A. WISE. Witnesses V. E. BALLARD, E. B. WALTEns. 

